G - Physics – 01 – P
Patent
G - Physics
01
P
354/32, 341/85
G01P 7/00 (2006.01) B60G 17/00 (2006.01) B60G 17/018 (2006.01) F16F 15/02 (2006.01) G01P 3/52 (2006.01) G05D 19/02 (2006.01)
Patent
CA 1332079
Abstract of the Disclosure An improved method and apparatus is provided for estimation of absolute velocity in active or semi-active suspension systems. A controller produces a signal estimate of absolute velocity which can be implemented by a control algorithm to attenuate motion between spaced members, such as in vehicular suspension systems. The controller performs time integration of an accelerometer input signal by an analog integrator means comprising a first-order low-pass filter. A digital feedback or offset means is utilized to stabilize the signal and constrain the constant and relatively low frequency components of the analog integrated signal about an oscillatory voltage range. A digital filter means receives the stable signal and removes selected constant and low frequency components of the signal to produce a signal indicative of absolute velocities for a frequency range of interest further stabilized about a selected mid-range voltage value.
598938
Lord Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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